We've seen tons of steampunk versions of classic scifi characters in cosplay form, but what makes this group especially great is that they've assembled a larger steampunk Ghostbusters team, including Gozer and a vest-wearing Stay Puft Marshmallow Man.

Fashionably Geek spotted this well dressed group this weekend at GenCon. Head over to their site to see more photos of the group, including a better look at those proton packs.